DC Field | Value | Language |
---|---|---|
dc.contributor.author | Park, Kyu‐Young | - |
dc.contributor.author | Zhu, Yizhou | - |
dc.contributor.author | Torres‐Castanedo, Carlos G. | - |
dc.contributor.author | Jung, Hee Joon | - |
dc.contributor.author | Luu, Norman S. | - |
dc.contributor.author | Kahvecioglu, Ozge | - |
dc.contributor.author | Yoo, Yiseul | - |
dc.contributor.author | Seo, Jung‐Woo T. | - |
dc.contributor.author | Downing, Julia R. | - |
dc.contributor.author | Lim, Hee‐Dae | - |
dc.contributor.author | Bedzyk, Michael J. | - |
dc.contributor.author | Wolverton, Christopher | - |
dc.contributor.author | Hersam, Mark C. | - |
dc.date.accessioned | 2021-12-02T08:35:24Z | - |
dc.date.available | 2021-12-02T08:35:24Z | - |
dc.date.created | 2021-11-30 | - |
dc.date.issued | 2022-01 | - |
dc.identifier.issn | 0935-9648 | - |
dc.identifier.uri | https://oasis.postech.ac.kr/handle/2014.oak/107711 | - |
dc.description.abstract | LiNiO2 (LNO) is a promising cathode material for next-generation Li-ion batteries due to its exceptionally high capacity and cobalt-free composition that enables more sustainable and ethical large-scale manufacturing. However, its poor cycle life at high operating voltages over 4.1 V impedes its practical use, thus motivating efforts to elucidate and mitigate LiNiO2 degradation mechanisms at high states of charge. Here, a multiscale exploration of high-voltage degradation cascades associated with oxygen stacking chemistry in cobalt-free LiNiO2, is presented. Lattice oxygen loss is found to play a critical role in the local O3–O1 stacking transition at high states of charge, which subsequently leads to Ni-ion migration and irreversible stacking faults during cycling. This undesirable atomic-scale structural evolution accelerates microscale electrochemical creep, cracking, and even bending of layers, ultimately resulting in macroscopic mechanical degradation of LNO particles. By employing a graphene-based hermetic surface coating, oxygen loss is attenuated in LNO at high states of charge, which suppresses the initiation of the degradation cascade and thus substantially improves the high-voltage capacity retention of LNO. Overall, this study provides mechanistic insight into the high-voltage degradation of LNO, which will inform ongoing efforts to employ cobalt-free cathodes in Li-ion battery technology. © 2021 Wiley-VCH GmbH | - |
dc.language | English | - |
dc.publisher | WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim | - |
dc.relation.isPartOf | Advanced Materials | - |
dc.title | Elucidating and Mitigating High‐Voltage Degradation Cascades in Cobalt‐Free LiNiO2 Lithium‐Ion Battery Cathodes | - |
dc.type | Article | - |
dc.identifier.doi | 10.1002/adma.202106402 | - |
dc.type.rims | ART | - |
dc.identifier.bibliographicCitation | Advanced Materials, v.34, no.3 | - |
dc.identifier.wosid | 000745097300042 | - |
dc.citation.number | 3 | - |
dc.citation.title | Advanced Materials | - |
dc.citation.volume | 34 | - |
dc.contributor.affiliatedAuthor | Park, Kyu‐Young | - |
dc.identifier.scopusid | 2-s2.0-85119373451 | - |
dc.description.journalClass | 1 | - |
dc.description.journalClass | 1 | - |
dc.description.isOpenAccess | N | - |
dc.type.docType | Article | - |
dc.subject.keywordPlus | STRUCTURAL CHARACTERIZATION | - |
dc.subject.keywordPlus | OXIDE CATHODE | - |
dc.subject.keywordPlus | ELECTROCHEMISTRY | - |
dc.subject.keywordPlus | PHASE | - |
dc.subject.keywordPlus | TRANSITION | - |
dc.subject.keywordPlus | LIXNIO2 | - |
dc.subject.keywordAuthor | graphene coating | - |
dc.subject.keywordAuthor | lithium battery | - |
dc.subject.keywordAuthor | lithium nickel oxide | - |
dc.subject.keywordAuthor | oxygen evolution | - |
dc.subject.keywordAuthor | stacking faults | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Multidisciplinary | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Physical | - |
dc.relation.journalWebOfScienceCategory | Nanoscience & Nanotechnology | - |
dc.relation.journalWebOfScienceCategory | Materials Science, Multidisciplinary | - |
dc.relation.journalWebOfScienceCategory | Physics, Applied | - |
dc.relation.journalWebOfScienceCategory | Physics, Condensed Matter | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Chemistry | - |
dc.relation.journalResearchArea | Science & Technology - Other Topics | - |
dc.relation.journalResearchArea | Materials Science | - |
dc.relation.journalResearchArea | Physics | - |
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